Primary Pituitary Abscess Mimicking an Adenoma: A Rare Entity

Pituitary abscesses, rare lesions, may be divided into primary and secondary types. A 26-years-old woman presented with decreasing vision, and headache. Magnetic resonance images (MRI) was suggestive of a sellar tumour. She underwent a transsphenoidal approach to the pituitary gland. After dural opening, purulent material was obtained and no tumour or other associated lesion was detected. It could be mistaken for a solid mass or presumed to represent a pituitary adenoma. This images that emerges is of a rare and enigmatic problem that is commonly misdiagnosed but ordinarily well treated by transsphenoidal surgery. In intracellar, encapsulated and contrast enhancement masses, even if the clinical findings are normal, abscess of the pituitary should be thought.